The MK4 Trident was developed with the help of retired Navy SEAL and professional firearms trainer Jeff Gonzales. It is our top of the line rifle and contains many unique features. It has a 14.5" Gov't profile barrel, pin and welded to a Battle Comp muzzle device. It comes cerakoted in one of several colors, and features the Trident Concepts logo on upper and lower. The rifle has the Giessele Super-T trigger developed by Jeff with Bill Giesesele. It has been tested and proven to be one of the best fighting guns on the market.